Question

Fatima has 3 packs of batteries. Each pack contains 4 batteries. She gives her brother 8 batteries to put in his toy robot. Let b represent the number of batteries Fatima has left. Which equation could be used to find the value of b?

Answer 1

Answer: See explanation

Explanation:

Let b represent the number of batteries Fatima has left.

The equation that can be used to find the value of b goes thus:

(3 × 4) = b + 8

12 = b + 8

b = 12 - 8

Therefore, based on the above equation, the number of batteries that Fatima has left will be 4.